Acids, Bases, Alkalis, Salts

Question 1

When acids react with an alkali what happens?

Answer 1

Neutrallisation: Acid + Alkali > Salt + Water.

Question 2

When acids react what happens to their atoms?

Answer 2

They donate one H+ ion, hydrogen ion.

Question 3

What colour does acid turn universal indicator?

Answer 3

Red, orange or yellow.

Question 4

What colour does acid turn blue litmus paper?

Answer 4

Red

Question 5

When they react what happens to hydrogen?

Answer 5

It turns from an atom:
H(1,1) one proton, one electron and no neutrons.
To an ion:
H(1,1) one proton, no electrons and no neutrons.

Question 6

What is hydrogen after the reaction?

Answer 6

A proton. (Positive ion)

Question 7

What is the ph number of acids?

Answer 7

1 to 6

Question 8

Are acids corrosive?

Answer 8

Yes

Question 9

Give three examples of acids.

Answer 9

Vinegar, Lemons, Car Batteries.

Question 10

What do all acids contain?

Answer 10

Hydrogen

Question 11

What is HNO(3)?

Answer 11

Nitric Acid

Question 12

What is H(2)SO(4)?

Answer 12

Sulphuric Acid

Question 13

What is HCL?

Answer 13

Hydrochloric acid.

Question 14

What happens to Nitric Acid in a reaction?

Answer 14

Loses 1 hydrogen ion.

Question 15

What happens to Sulphuric Acid in a reaction?

Answer 15

Loses 2 hydrogen ions.

Question 16

What happens to Hydrochloric acid in a reaction?

Answer 16

Loses 3 hydrogen ions.

Question 17

Acid is what?

Answer 17

A compound that contains hydrogen and releases hydrogen ions in water.

Question 18

Acids taste what?

Answer 18

Sour

Question 19

What is the main danger of acid?

Answer 19

It can burn your skin.

Question 20

What happens when acids react with metals?

Answer 20

They produce hydrogen gas as the acid dissolves the metal material.

Question 21

What are Bases in chemistry?

Answer 21

They are compounds that contain an oxygen-hydrogen combination called a hydroxide.

Question 22

When placed in water what happens?

Answer 22

The hydroxide forms hydroxide ions OH-

Question 23

Bases feel….?

Answer 23

Soapy

Question 24

Bases taste…?

Answer 24

Bitter

Question 25

Examples of Bases?

Answer 25

Clearing drains.

Question 26

The danger of Bases?

Answer 26

Can dissolve hair and food?

Question 27

Acid and Alkali ->?

Answer 27

Salt solution + water

e.g HCL + NaOH -> NaCL + H(2)O

Question 28

Acid and Base >?

Answer 28

Salt solution + water

e.g H(2)SO(4) + CuO -> CuSO(4) + H(2)O

Question 29

Acid and Metal?

Metal above coppers reactivity but not copper.

Answer 29

Salt solution + hydrogen

2HCL + Zn -> ZnCL(2) + H(2)

Question 30

Acid and Metal carbonate?

Metal above coppers reactivity but not copper.

Answer 30

Salt solution + water + carbondioxide?

2HCL + CaCO(3) -> CaCl(2) + H(2)O + CO(2)

Question 31

Hydrochloric acid = salt name and symbol.

Answer 31

Chloride Salts, HCL

Question 32

Sulphuric Acid = salt name and symbol.

Answer 32

Sulphate Salts, H(2)SO(4)

Question 33

Nitric Acid = salt name and symbol.

Answer 33

Nitrate Salts, HNO(3)

Question 34

Phosphoric acid = salt name and symbol.

Answer 34

Phosphate Salts, H(3)PO(4)

Question 35

Ethanoic acid = salt name and symbol.

Answer 35

Ethanoate salts, CH(3)COOH

Question 36

What states are the acids and salts usually?

Answer 36

Aquos, Water dissolved.

Question 37

What would you feel and see if you touched a test-tube full of acid and a reaction taking place?

Answer 37

Heat, Fizzing.

Question 38

What is the reaction between an acid and an alkali called?

Answer 38

Neutralisation

Question 39

Alkalis/Bases: What do they gain when they react?

Answer 39

Hydrogen Proton Ion.

Question 40

What is the difference between Alkalis and Bases?

Answer 40

Alkalis are Soluble Bases.

Alkalis are bases, but not all bases are alkalis.

Question 41

What is alkalis/bases PH?

Answer 41

8 to 4

Question 42

What is Alkalis/bases universal indicator colour?

Answer 42

Blue or Purple.